The SharePoint 2016 July 2016 Updates have been released:
SharePoint Server 2016 (sts-x-none.msp): https://support.microsoft.com/en-us/kb/3115299
SharePoint Server 2016 (wssloc): https://support.microsoft.com/en-us/kb/3115304
Office Online Server: https://support.microsoft.com/en-us/kb/3115386
Office Updates: https://support.microsoft.com/en-us/kb/3173835
Consider using the SharePoint Patch Cmdlets available at SharePoint Updates for your farm!
How do you tell which update package to use? I guess the better question is what is the difference in these two updates?
SharePoint Server 2016 (sts-x-none.msp): https://support.microsoft.com/en-us/kb/3115299
SharePoint Server 2016 (wssloc): https://support.microsoft.com/en-us/kb/3115304
Thanks for all your hard work on this and many other sites.
You apply both. First sts-x-none, then wssloc. The sts-x-none is the core update while wssloc installs locale-specific files (all locales).